Originally Posted by GoSharks
Preferences -> Output Options -> Mobi Output (and/or azw3)-> check the box 'Use Author Sort for Author'
Karma your way sir. So I need to re-convert everything from mobi to mobi again, correct?
Another thing I'm noticing - the Kindle Paperwhite doesn't use the title sort column, just my titles itself to sort. I sort by author normally, but I have a lot of series that I have put numbers in front of, so they will sort in the correct order for that series. However, it seems to keep ignoring the Title sort metadata I use in calibre. Any way to fix this?